a. 着魔的, 恶魔的

n. 着魔的人

[医] 魔凭的, 精神错乱的, 精神错乱者

Demoniac \De*mo"ni*ac\, n.
1. A human being possessed by a demon or evil spirit; one
whose faculties are directly controlled by a demon.

The demoniac in the gospel was sometimes cast into
the fire. --Bates.

2. (Eccl. Hist.) One of a sect of Anabaptists who maintain
that the demons or devils will finally be saved.


Demoniac \De*mo"ni*ac\, Demoniacal \Dem`o*ni"a*cal\ (?; 277), a.
[L. daemoniacus, fr. daemon; cf. F. d['e]moniaque. See
{Demon}.]
1. Pertaining to, or characteristic of, a demon or evil
spirit; devilish; as, a demoniac being; demoniacal
practices.

Sarcastic, demoniacal laughter. --Thackeray.

2. Influenced or produced by a demon or evil spirit; as,
demoniac or demoniacal power. ``Demoniac frenzy.''
--Milton.

3. resembling or suggesting possession by a demon; as,
demoniac energy.
[WordNet 1.5]

4. in a murderous frenzy as if possessed by a demon.

Syn: amuck, amok, berserk, demoniac, possessed(predicate).
[WordNet 1.5]